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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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Chrome coverage on executive chair
January 8, 2008
Hi, I am Prasanna Borkar having a 2000 ltr Nickel &1000 ltr Chrome plating facility in Goa, India. We are an ancillary of a MNC making executive chairs. One of the various items is the Base. This is a 5-legged (25mm dia tube)brazed on a 52 dia tube central support of length 250 mm & the legs are further supported by 8mm rods also brazed. kindly visualise this as something close to an umbrella.The plating envelope is 750 mm L x 750 mm W x 250 mm H
my problem is we can see yellow mark all around near the brazed joints of the 25 mm dia &8 mm rod.We have tried all possible current densities, anode positions, auxiliary anodes.
other day I was invited by my parent company to find a clean plated piece.
can you please guide me to solve this problem
PLATING SHOP OWNER - PONDA, GOA, INDIA
January 10, 2008
You do not say what your parent metals are or what braze you are using. The readers at this site are not mind readers, and preplate steps are critical when you are plating dissimilar metals.
Also, you do not give your process steps. People are reluctant to offer suggestions, and frequently get a "we tried that" answer.
Questions are like computers, garbage in- garbage out---GIGO.
- Navarre, Florida
adv.
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